Mercurial > hg > digilib-old

comparison servlet/src/digilib/image/JAIImageLoaderDocuImage.java @ 570:fd2ef7e46119

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more cleanup, set version to 1.8.2
author robcast
date Tue, 21 Dec 2010 20:24:09 +0100
parents 919e008ab1fb
children aee436f0549d
comparison
equal deleted inserted replaced
569:1f666c2b4578 570:fd2ef7e46119
33 import javax.imageio.ImageReadParam; 33 import javax.imageio.ImageReadParam;
34 import javax.imageio.ImageReader; 34 import javax.imageio.ImageReader;
35 import javax.imageio.stream.FileImageInputStream; 35 import javax.imageio.stream.FileImageInputStream;
36 import javax.imageio.stream.ImageInputStream; 36 import javax.imageio.stream.ImageInputStream;
37 import javax.media.jai.JAI; 37 import javax.media.jai.JAI;
38 import javax.servlet.ServletException;
38 39
39 import digilib.io.FileOpException; 40 import digilib.io.FileOpException;
40 import digilib.io.ImageFile; 41 import digilib.io.ImageFile;
41 42
42 /** DocuImage implementation using the Java Advanced Imaging API and the ImageLoader 43 /** DocuImage implementation using the Java Advanced Imaging API and the ImageLoader
52 /* loadSubimage is supported. */ 53 /* loadSubimage is supported. */
53 public boolean isSubimageSupported() { 54 public boolean isSubimageSupported() {
54 return true; 55 return true;
55 } 56 }
56 57
57 public int getHeight() { 58 /* returns the size of the current image */
58 int h = 0; 59 public ImageSize getSize() {
59 try { 60 ImageSize is = null;
60 if (img == null) { 61 // TODO: can we cache imageSize?
61 h = reader.getHeight(0); 62 int h = 0;
62 } else { 63 int w = 0;
63 h = img.getHeight(); 64 try {
64 } 65 if (img == null) {
65 } catch (IOException e) { 66 // get size from ImageReader
66 logger.debug("error in getHeight", e); 67 h = reader.getHeight(0);
67 } 68 w = reader.getWidth(0);
68 return h; 69 } else {
69 } 70 // get size from image
71 h = img.getHeight();
72 w = img.getWidth();
73 }
74 is = new ImageSize(w, h);
75 } catch (IOException e) {
76 logger.debug("error in getSize:", e);
77 }
78 return is;
79 }
70 80
71 public int getWidth() {
72 int w = 0;
73 try {
74 if (img == null) {
75 w = reader.getWidth(0);
76 } else {
77 w = img.getWidth();
78 }
79 } catch (IOException e) {
80 logger.debug("error in getHeight", e);
81 }
82 return w;
83 }
84 81
85 /* Load an image file into the Object. */ 82 /* Load an image file into the Object. */
86 public void loadImage(ImageFile f) throws FileOpException { 83 public void loadImage(ImageFile f) throws FileOpException {
87 logger.debug("loadImage: "+f.getFile()); 84 logger.debug("loadImage: "+f.getFile());
88 //System.gc(); 85 //System.gc();
145 } 142 }
146 143
147 144
148 /* Write the current image to an OutputStream. */ 145 /* Write the current image to an OutputStream. */
149 public void writeImage(String mt, OutputStream ostream) 146 public void writeImage(String mt, OutputStream ostream)
150 throws FileOpException { 147 throws ImageOpException, ServletException {
151 logger.debug("writeImage"); 148 logger.debug("writeImage");
152 try { 149 try {
153 // setup output 150 // setup output
154 ParameterBlock pb3 = new ParameterBlock(); 151 ParameterBlock pb3 = new ParameterBlock();
155 pb3.addSource(img); 152 pb3.addSource(img);
158 pb3.add("JPEG"); 155 pb3.add("JPEG");
159 } else if (mt == "image/png") { 156 } else if (mt == "image/png") {
160 pb3.add("PNG"); 157 pb3.add("PNG");
161 } else { 158 } else {
162 // unknown mime type 159 // unknown mime type
163 throw new FileOpException("Unknown mime type: " + mt); 160 throw new ImageOpException("Unknown mime type: " + mt);
164 } 161 }
165 // render output 162 // render output
166 JAI.create("ImageWrite", pb3); 163 JAI.create("ImageWrite", pb3);
167 } catch (IOException e) { 164 } catch (RuntimeException e) {
168 throw new FileOpException("Error writing image."); 165 throw new ServletException("Error writing image.");
169 } 166 }
170 } 167 }
171 168
172 @Override 169 @Override
173 public Image getAwtImage() { 170 public Image getAwtImage() {